UNW_STRERROR(3libunwind)

✨ UNW_STRERROR ✨ (the 3libunwind page, bestie 💖)

okay so real talk — every library throws error codes at you and every single one of them is just a sad little negative number with zero explanation. unw_strerror is the girl who actually tells you what that number means. it's giving translator, it's giving emotional support for your err_code. 🫶

🎀 NAME 🎀

unw_strerror — get text corresponding to error code. literally just "what does this number say" and she'll tell you. no cap. 💅

🌸 SYNOPSIS 🌸

#include <libunwind.h>

const char * unw_strerror(int err_code);

yes ma'am, that's the whole thing. one include, one function, one int going in, one const char * coming out. iconic behaviour honestly. ✨

🦋 DESCRIPTION 🦋

The unw_strerror() routine maps the (negative) err_code to a corresponding text message and returns it.

that's it. that's the whole vibe. you hand her a negative number, she hands you back the sentence that number was always trying to say. matchmaker energy fr fr. 💖

heads up bestie: the codes are negative. don't come at her with a positive int and expect magic, iykyk. 😭

🌈 RETURN VALUE 🌈

She returns the message that corresponds to err_code or, if the err_code has no corresponding message, the text "invalid error code".

so either you get the tea ☕ or you get gently told "invalid error code". she's never leaving you empty-handed, that's the point. 👑

💜 THREAD AND SIGNAL SAFETY 💜

unw_strerror() is thread-safe as well as safe to use from a signal handler.

THE WAY THAT SHE'S SAFE FROM A SIGNAL HANDLER?? 😭 multiple threads going feral at the same time? fine. an actual signal handler? also fine. she does not crack under pressure, she is the moment. ⭐🦋

👑 AUTHOR 👑

this absolute legend wrote her:

• Thomas Hallgren
• BEA Systems
• Stockholm, Sweden
• Email: thallgre@bea.com

thank you for your service, king. 🇸🇪💖

so that's the page, bestie — UNW_STRERROR from the Programming Library, this version dated 29 August 2023, living in section 3libunwind. go forth, decode your negative numbers, and slay. periodt. 💅✨🎀🫶